elementary-dev-community team mailing list archive

[Darcy Brás da Silva <dardevelin@xxxxxxxxxxxxxx>]

Hi, I'm not quite sure, but from what I know in the C level <math.h> is
just a matter of adding a linker flag -lm
Having that said, if doesn't work through vala make a vapi call to the C
math lib...
Cheers
On Thu, 2012-09-13 at 08:52 +0530, Voldyman wrote:
> If we implement Math.floor function in pantheon terminal source
> wouldn't that work?
> 
> On 13-Sep-2012, at 3:29 AM, David Gomes <david@xxxxxxxxxxxxxxxx>
> wrote:
> 
> 
> 
> > On the terminal we now need Math.floor and Math.ceil for zooming in
> > and out using Ctrl-+ and Ctrl--. 
> > 
> > This brought along an issue when building the termina:
> > 
> > /usr/bin/ld:
> > CMakeFiles/pantheon-terminal.dir/src/TerminalWidget.c.o: undefined
> > reference to symbol 'floor@@GLIBC_2.2.5'
> > /usr/bin/ld: note: 'floor@@GLIBC_2.2.5' is defined in
> > DSO /usr/lib/libm.so.6 so try adding it to the linker command line
> > /usr/lib/libm.so.6: could not read symbols: Invalid operation
> > collect2: error: ld returned 1 exit status
> > make[2]: *** [pantheon-terminal] Error 1
> > 
> > In order to fix this, Ricotz suggested using the "-lm" flag on the
> > linker. I tried to do it and then it worked just fine. However, for
> > Victored and Eshat on Ubuntu (Luna), that made it stop working.
> > 
> > It seems that on Ubuntu the linker includes lm by default, and on
> > Arch it doesn't, and reincluding it causes troubles on Ubuntu.
> > 
> > On CMakeLists.txt I just added the following to make it compile:
> > 
> > set (CMAKE_EXE_LINKER_FLAGS "-lm")
> > 
> > Either way, I want Pantheon Terminal to compile across all GNU/Linux
> > distributions, so I need a way to solve this.
> > 
> > === modified file 'CMakeLists.txt'
> > --- CMakeLists.txt 2012-07-26 20:23:31 +0000
> > +++ CMakeLists.txt 2012-09-12 19:18:34 +0000
> > @@ -30,6 +30,7 @@
> >  find_package(PkgConfig)
> >  pkg_check_modules(DEPS REQUIRED gthread-2.0 gtk+-3.0 granite
> > vte-2.90 libnotify gdk-3.0)
> >  
> > +set (DEPS_LADD "${DEPS_LADD} -lm")
> >  add_definitions(${DEPS_CFLAGS})
> >  
> >  link_libraries(${DEPS_LIBRARIES})
> > 
> > Ricotz suggesting the avobe path to fix the issue. I applied that
> > patch and my patched CMakeLists.txt is attached. However, with this
> > patch I can't build it on Arch, but Victored managed to built it on
> > Ubuntu. I get the same good old error:
> > 
> > /usr/bin/ld:
> > CMakeFiles/pantheon-terminal.dir/src/TerminalWidget.c.o: undefined
> > reference to symbol 'floor@@GLIBC_2.2.5'
> > /usr/bin/ld: note: 'floor@@GLIBC_2.2.5' is defined in
> > DSO /usr/lib/libm.so.6 so try adding it to the linker command line
> > /usr/lib/libm.so.6: could not read symbols: Invalid operation
> > collect2: error: ld returned 1 exit status
> > 
> > So I'd appreciate some help guys, since I'm fairly new to CMake. Oh,
> > and this is the branch we're working on:
> > 
> > https://code.launchpad.net/~elementary-dev-community/pantheon-terminal/zoom-in-out
> > 
> > Thank you.
> > 
> > <CMakeLists.txt>
> > -- 
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> > 

-- 
Darcy Brás da Silva <dardevelin@xxxxxxxxxxxxxx>

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